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05/10/07 10:16 <br /> tr Kleinfelder(Stockton) Project: Kenworth T-22 <br /> 2825 East Myrtle St. Project Number: 82946.H01 CLS Work Order#:CQE0105 <br /> Stockton,CA 95205 Project Manager: Joseph D.Zilles COC#:3997,3998,3999 <br /> I <br /> 6 DRAFT: Conventional Chemistry Parameters by APHA/EPA Methods- Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CQ03828-General Preparation <br /> LCS Dup(CQ03828-BSD1) Prepared&Analyzed:05/04/07 <br /> Methylene Blue Active Substances 0.489 0.10 mg/L 0.500 97.8 80-120 0.408 20 <br /> Matrix Spike(CQ03828-MSI) Source:CQE0090-01 Prepared&Analyzed:05/04/07 <br /> Methylene Blue Active Substances 0.398 0.10 mg/L 0.500 ND 79.6 75-125 25 <br /> Matrix Spike Dup(CQ03828-MSDI) Source:CQE0090-01 Prepared&Analyzed:05/04/07 _ <br /> ` Methylene Blue Active Substances 0.396 0.10 mg/L 0.500 ND 79.2 75-125 0.504 25 <br /> Batch CQ03830-General Preparation <br /> Blank(CQ03830-BLKI) Prepared&Analyzed:05/04/07 <br /> Specific Conductance(EC) ND 1.0 µmhos/cm <br /> Batch CQ03918-General Preparation <br /> Blank(CQ03918-BLKI) Prepared&Analyzed:05/08/07 <br /> Cyanide(total) ND 0.0050 mg/L <br /> LCS(CQ03918-BSI) Prepared&Analyzed:05/08/07 <br /> •" Cyanide(total) 0.0813 0.0050 mg/L 0.100 81.3 75-125 <br /> LCS Dup(CQ03918-BSDI) Prepared&Analyzed:05/08/07 <br /> Cyanide(total) 0.0828 0.0050 mg/L 0.100 82.8 75-125 1.83 25 <br /> r <br /> Matrix Spike(CQ03918-MSI) Source:CQE0105-01 Prepared&Analyzed:05/08/07 <br /> Cyanide(total) 0.0771 0.0050 mg/L 0.100 0.00420 72.9 75-125 QM-7 <br /> 6. <br /> CA DOHS ELAP Accreditation/Registration Number 1233 PLATE <br /> 32 <br />